Results 1 to 10 of about 102 (99)

Structure of the (Total) Transformation Monoids Under Rank N Generators [version 2; peer review: 2 approved] [PDF]

F1000Research
Throughout this paper our study focuses on transformation semigroups. These kinds of semigroups are the corner stone of semigroup theory. This is because every semigroup is isomorphic to transformation semigroup.
Asawer Al-Aadhami, Hala M. Sulaiman
doaj   +2 more sources

On the endomorphism semigroups of extra-special $p$-groups and automorphism orbits [PDF]

International Journal of Group Theory, 2022
For an odd prime $p$ and a positive integer $n$, it is well known that there are two types of extra-special $p$-groups of order $p^{2n+1}$, first one is the Heisenberg group which has exponent $p$ and the second one is of exponent $p^2$.
Chudamani Pranesachar Anil Kumar, Soham Swadhin Pradhan   +1 more
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On determinability of idempotent medial commutative quasigroups by their endomorphism semigroups; pp. 81–87 [PDF]

Proceedings of the Estonian Academy of Sciences, 2011
We extend the result of P. Puusemp (Idempotents of the endomorphism semigroups of groups. Acta Comment. Univ. Tartuensis, 1975, 366, 76–104) about determinability of finite Abelian groups by their endomorphism semigroups to finite idempotent medial ...
Alar Leibak, Peeter Puusemp
doaj   +1 more source

On endomorphisms of groups of order 36; pp. 237–254 [PDF]

Proceedings of the Estonian Academy of Sciences, 2016
There exist exactly 14 non-isomorphic groups of order 36. In this paper we will prove that three of them are not determined by their endomorphism semigroups in the class of all groups.
Alar Leibak, Peeter Puusemp
doaj   +1 more source

Endomorphisms and anti-endomorphisms of some finite groupoids

Журнал Средневолжского математического общества, 2022
In this paper, we study anti-endomorphisms of some finite groupoids. Previously, special groupoids $S(k, q)$ of order $k(1+k)$ with a generating set of $k$ elements were introduced.
Litavrin Andrey V.
doaj   +1 more source

A Note on Extensions of Semigroups of ∗-Endomorphisms [PDF]

Proceedings of the American Mathematical Society, 1992
We present a relatively elementary proof that every E 0 {E_0}
Arveson, William, Kishimoto, Akitaka
openaire   +1 more source

Semigroups with few endomorphisms [PDF]

Journal of the Australian Mathematical Society, 1969
Large finite groups have large automorphism groups [4]; infinite groups may, like the infinite cyclic group, have finite automorphism groups, but their endomorphism semigroups are infinite (see Baer [1, p. 530] or [2, p. 68]). We show in this paper that the corresponding propositions for semigroups are false.
Vlastimil Dlab, B. H. Neumann
openaire   +1 more source

On semigroups of graph endomorphisms

Discrete Mathematics, 1980
AbstractIt is shown that given a finite or infinite graph H and a subsemigroup B of its endomorphism semigroup End H, there exists a graph G such that 1.(i)|H is an induced subgraph of G,2.(ii)|H is stable by every f ϵ End G,3.(iii)|every f ϵ End G is uniquely determined by its restriction to H,4.(iv)|the restriction of End G to H is precisely B.
Stéphane Foldes, Gert Sabidussi
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Endomorphism monoids of semilattices of semigroups

Науковий вісник Ужгородського університету. Серія: Математика і інформатика, 2017
We prove that the endomorphism monoid of a semilattice of semigroups, which are semilattice indecomposable, is isomorphically embedded into the wreath product of a transformation semigroup with a small category.
Ю. В. Жучок
doaj   +1 more source

The Endomorphism Semigroup of a Special Semigroup

Journal of Bangladesh Academy of Sciences, 1970
The endomorphism semigroup for a class of commutative semigroups, called special semigroups, will be studied their structures will be determined in some important cases. AMS Classification : 20 Keywords: Special semigroups, freeness, divisibility, direct sums, endomorphism, endomorphism semigroup.
Mohd. Altab Hossain, Subrata Majumdar
openaire   +2 more sources